Find the Greatest Common Factor By Prime Factorization #2

Practice finding the greatest common factor (GCF) by using factor trees to find the prime factorization! Designed to support and nurture sixth-grade math skills, this one-page number theory worksheet walks through an example of how to find the GCF by finding the product of the prime factors that two numbers have in common. For even more practice, check out Find the Greatest Common Factor by Prime Factorization #1 and Find the Greatest Common Factor by Prime Factorization #3.